Crown Audio I-T12000 HD User Manual

Operation Manual

I-Tech HD Series Power Amplifi ers

page 40

5 Troubleshooting

CONDITION: No sound, even though
the amp has power. Power LED is on
with out fl ashing and the amp is receiving an input
sig nal. Signal indicator is on or fl ashing.

POSSIBLE REASON

• Speakers not connected.

• Open circuit due to speaker failure.

• Ready LED is off. Channel has been set to

standby mode via the software.

• Amplifi er is in blackout mode. Press or

turn an Encoder to reactivate the LCD
display.

CONDITION: No input signal. Signal
indicator is not fl ashing even though audio is
applied, and the channel is ready.

POSSIBLE REASON

• Input signal level is very low.

• Another source is selected or routed.

CONDITION: Data indicator not fl ash-
ing, even though host computer
software is active.

POSSIBLE REASON:

• Cable between computer and amplifi er is bro ken

or not connected.

Note: Data indicator fl ashes only when the amplifi er
is polled for data, or is polled to see whether it is
online.

CONDITION: Yellow LINK ACTIVITY indicator in
Ethernet connector does not illuminate or fl ash.

POSSIBLE REASON:

• Ethernet link is broken.

CONDITION: Computer does not communicate with the
network devices.

POSSIBLE REASON:

• Incorrect wiring. See Section 3.5 letter O on network wiring.

• IP Addressing is not done correctly. Use the Network Troubleshooting

Wizard in System Architect.

• There is a short on the amplifi er output. First

disconnect your speakers from the affected
channel(s) one by one to determine if one of
the loads is shorted.

CONDITION: COND indicator is off.

POSSIBLE REASON:

• There is only one conductor allowed per network system. This

indicator is lit only when the amplifi er is the conductor.

• Amplifi er is in blackout mode. Press or turn an Encoder to

reactivate the LCD display.